A phytochemical investigation of the extracts obtained from bulbs of leek, Allium porrum L. has led to the isolation of five flavonoid glycosides based on the kaempferol aglycone. Two of them are new compounds and have been identified as kaempferol 3-O-[2-O-(trans-3-methoxy-4-hydroxycinnamoyl)-β-D-galactopyranosyl] -(1→4)-O-β-D-glucopyranoside, and kaempferol 3-O-[2-O-(trans-3-methoxy-4-hydroxycinnamoyl)-β-D-glucopyranosyl]- (1→6)-O-β-D-glucopyranoside, on the basis of spectroscopic methods, including 2D NMR. The isolated compounds have been evaluated for their human platelet anti-aggregation activity
The flavonoids of leek, Allium porrum / E., Fattorusso; Lanzotti, Virginia; TAGLIALATELA SCAFATI, Orazio; Cicala, Carla. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - STAMPA. - 57:(2001), pp. 565-569.
The flavonoids of leek, Allium porrum.
LANZOTTI, VIRGINIA;TAGLIALATELA SCAFATI, ORAZIO;CICALA, CARLA
2001
Abstract
A phytochemical investigation of the extracts obtained from bulbs of leek, Allium porrum L. has led to the isolation of five flavonoid glycosides based on the kaempferol aglycone. Two of them are new compounds and have been identified as kaempferol 3-O-[2-O-(trans-3-methoxy-4-hydroxycinnamoyl)-β-D-galactopyranosyl] -(1→4)-O-β-D-glucopyranoside, and kaempferol 3-O-[2-O-(trans-3-methoxy-4-hydroxycinnamoyl)-β-D-glucopyranosyl]- (1→6)-O-β-D-glucopyranoside, on the basis of spectroscopic methods, including 2D NMR. The isolated compounds have been evaluated for their human platelet anti-aggregation activityI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
